-
公开(公告)号：US07271766B2
公开(公告)日：2007-09-18
申请号：US10909184
申请日：2004-07-30
摘要： In a local positioning system, augmentation of the land-based system is provided by receiving signals from a GNSS. The signals from the land-based positioning system have a code phase accuracy better than one wavelength of a carrier of the signals from the GNSS. Different decorrelation may be used for signals from a satellite than from a land-based transmitter, such as using a digital decorrelator for signals from the satellite and an analog decorrelator for signals from a land-based transmitter. The receivers may include both a GNSS antenna and a local antenna. The phase centers of the two antennas are within one wavelength of the GNSS signals from each other. The local antenna is sized for operation in the X or ISM-bands of frequencies. The GNSS antenna is a patch antenna where the microwave antenna extends away from the patch antenna in at least one dimension.
摘要翻译： 在本地定位系统中，通过从GNSS接收信号来提供陆基系统的增强。 来自陆上定位系统的信号的编码相位精度优于来自GNSS的信号的载波的一个波长。 不同的去相关可以用于来自卫星的信号，而不是来自基于陆地的发射机，例如对于来自卫星的信号使用数字解相关器和用于来自陆地发射机的信号的模拟去相关器。 接收机可以包括GNSS天线和本地天线。 两个天线的相位中心在GNSS信号的一个波长内。 本地天线的大小适合在X或ISM频段中运行。 GNSS天线是贴片天线，其中微波天线在至少一个维度上远离贴片天线延伸。
-
公开(公告)号：US06880643B1
公开(公告)日：2005-04-19
申请号：US10359409
申请日：2003-02-06
申请人： Kurt R. Zimmerman , Avi Gross , Michael O'Connor , Glen Sapilewski , David G. Lawrence , H. Stewart Cobb , Lars Leckie , Paul Y. Montgomery
发明人： Kurt R. Zimmerman , Avi Gross , Michael O'Connor , Glen Sapilewski , David G. Lawrence , H. Stewart Cobb , Lars Leckie , Paul Y. Montgomery
CPC分类号： E02F3/84
摘要： A land-leveling system that uses the Global Positioning System is provided. The system provides for an earth-moving machine mounted with an antenna that receives GPS signals from the satellites of the Global Positioning System. The earth-moving machine comprises a vehicle attached to a work implement, which is also connected to an actuator. A decision unit mounted on the vehicle sends control signals to the actuator, which controls the elevation of the work implement. These control signals are generated using the signals received from the antenna and the desired grade map. This system has an increased coverage area, more accuracy and round-the-clock operability. The system could be used to carry out all the land-leveling operations viz. surveying, leveling and verifying.
摘要翻译： 提供了使用全球定位系统的地面平整系统。 该系统提供一种安装有天线的移动机器，该天线从全球定位系统的卫星接收GPS信号。 移土机包括附接到工作工具的车辆，该工具还连接到致动器。 安装在车辆上的决定单元向执行器发送控制信号，该控制信号控制作业工具的高度。 这些控制信号使用从天线接收的信号和期望的等级图来产生。 该系统具有增加的覆盖面积，更高的准确度和全天候的可操作性。 该系统可用于执行所有的土地平整操作。 测量，调平和验证。
-
公开(公告)号：US07385554B2
公开(公告)日：2008-06-10
申请号：US11515547
申请日：2006-09-05
摘要： In a local positioning system, augmentation of the land-based system is provided by receiving signals from a GNSS. The signals from the land-based positioning system have a code phase accuracy better than one wavelength of a carrier of the signals from the GNSS. Different decorrelation may be used for signals from a satellite than from a land-based transmitter, such as using a digital decorrelator for signals from the satellite and an analog decorrelator for signals from a land-based transmitter. The receivers may include both a GNSS antenna and a local antenna. The phase centers of the two antennas are within one wavelength of the GNSS signals from each other. The local antenna is sized for operation in the X or ISM-bands of frequencies. The GNSS antenna is a patch antenna where the microwave antenna extends away from the patch antenna in at least one dimension.
摘要翻译： 在本地定位系统中，通过从GNSS接收信号来提供陆基系统的增强。 来自陆上定位系统的信号的编码相位精度优于来自GNSS的信号的载波的一个波长。 不同的去相关可以用于来自卫星的信号，而不是来自基于陆地的发射机，例如对于来自卫星的信号使用数字解相关器和用于来自陆基发射机的信号的模拟去相关器。 接收机可以包括GNSS天线和本地天线。 两个天线的相位中心在GNSS信号的一个波长内。 本地天线的大小适合在X或ISM频段中运行。 GNSS天线是贴片天线，其中微波天线在至少一个维度上远离贴片天线延伸。
-
公开(公告)号：US06784830B1
公开(公告)日：2004-08-31
申请号：US10413354
申请日：2003-04-14
IPC分类号： G01S514
摘要： A method and a system for L1/L2 phase and magnitude determination in satellite navigation equipment is disclosed herein. The method generates separate W code estimates for the L1 signal and the L2 signal, the estimates being uncorrelated with the error in the inphase and the quadrature components of the corresponding signals. The W code is estimated using both the L1 signal as well as the L2 signal. The L1 and L2 baseband signals are obtained from the corresponding RF signals. The baseband signals are added and then filtered using a non-causal FIR LPF. This filter has the property that the output at a time instant is uncorrelated with the input at that time instant. In the preferred embodiment, a one-W-code-bit I&D filter is used instead of a FIR LPF. In an alternate embodiment, a single W code estimate is obtained for both the L1 and the L2 signal.
摘要翻译： 本文公开了一种用于卫星导航设备中的L1 / L2相位和幅度确定的方法和系统。 该方法为L1信号和L2信号生成单独的W码估计，估计与相位中的误差和相应信号的正交分量不相关。 使用L1信号以及L2信号来估计W码。 从对应的RF信号获得L1和L2基带信号。 添加基带信号，然后使用非因果FIR LPF进行滤波。 该过滤器具有这样的属性，即当时的输出与该时刻的输入不相关。 在优选实施例中，使用单W位位I＆D滤波器来代替FIR LPF。 在替代实施例中，对L1和L2信号都获得单个W码估计。
-
公开(公告)号：US20100045522A1
公开(公告)日：2010-02-25
申请号：US11499544
申请日：2006-08-04
IPC分类号： G01S19/00
摘要： A set of receiver antennas, of which at least one of the receiver antennas has the capability of receiving frequencies that another receiver antenna from the set is incapable of receiving, is used for determining position and orientation in a navigation system.
摘要翻译： 一组接收机天线，其中至少一个接收机天线具有接收来自该组的另一个接收机天线不能接收的频率的能力，用于确定导航系统中的位置和方位。
-
公开(公告)号：US07468697B2
公开(公告)日：2008-12-23
申请号：US11499827
申请日：2006-08-04
IPC分类号： G01S3/02
CPC分类号： G01S13/87 , G01S5/0289 , G01S7/003 , G01S13/74
摘要： A precise positioning method and system is disclosed for allowing an array of ground transmitters to self-survey their relative location at centimeter-level accuracy by transmitting, amongst the ground transmitters in the array, bi-directional ranging signals associated with a wideband code modulation with a chipping rate faster than 30 MHz.
摘要翻译： 公开了一种精确的定位方法和系统，用于通过在阵列中的地面发射机之间传输与宽带码调制相关联的双向测距信号，允许地面发射机阵列以厘米级精度自我测量它们的相对位置， 芯片速度比30 MHz快。
-
公开(公告)号：US07683830B2
公开(公告)日：2010-03-23
申请号：US11499544
申请日：2006-08-04
IPC分类号： G01S1/00
摘要： A set of receiver antennas, of which at least one of the receiver antennas has the capability of receiving frequencies that another receiver antenna from the set is incapable of receiving, is used for determining position and orientation in a navigation system.
摘要翻译： 一组接收机天线，其中至少一个接收机天线具有接收来自该组的另一个接收机天线不能接收的频率的能力，用于确定导航系统中的位置和方位。
-
公开(公告)号：US07511667B2
公开(公告)日：2009-03-31
申请号：US11360359
申请日：2006-02-22
CPC分类号： G01S19/11
摘要： A precise positioning method and system is disclosed wherein at least one ground transmitter is used for transmitting a ranging signal with code modulation. The at least one ground transmitter is configured to receive a signal from at least one satellite and a second ground transmitter. The at least one ground transmitter measures a code phase of the received signals. The measured code phase information is communicated to a rover that is associated with a user. The rover can determine the user's precise position based on the measured code and/or carrier phase information and a clock correction model.
摘要翻译： 公开了一种精确的定位方法和系统，其中使用至少一个地面发射机来发射具有码调制的测距信号。 所述至少一个地面发射机被配置为从至少一个卫星和第二地面发射机接收信号。 所述至少一个地面发射机测量接收信号的码相位。 所测量的代码相位信息被传送到与用户相关联的流动站。 流动站可以基于测量的代码和/或载波相位信息和时钟校正模型来确定用户的精确位置。
-
公开(公告)号：US20080036660A1
公开(公告)日：2008-02-14
申请号：US11499827
申请日：2006-08-04
IPC分类号： G01S3/02
CPC分类号： G01S13/87 , G01S5/0289 , G01S7/003 , G01S13/74
摘要： A precise positioning method and system is disclosed for allowing an array of ground transmitters to self-survey their relative location at centimeter-level accuracy by transmitting, amongst the ground transmitters in the array, bi-directional ranging signals associated with a wideband code modulation with a chipping rate faster than 30 MHz.
-
公开(公告)号：USD553124S1
公开(公告)日：2007-10-16
申请号：US29251326
申请日：2006-01-05
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.02 秒)